Full Product Manual

IHR Series Manual
14
2.0 Installation • Gas Supply
Gas Supply
Important! Before connecting the gas supply to the infrared heater(s):
• Check that the gas piping and service has the capacity to handle the load of all heaters being
installed, as well as any other gas appliances being connected to the supply line.
• Check that the main gas supply line is of proper diameter to supply the required fuel pressures.
• If utilizing used pipe, verify that its condition is clean and comparable to a new pipe. Test all gas
supply lines in accordance with local codes.
• Test and confirm that inlet pressures are correct. Refer to the rating plate for required minimum
and maximum pressures (see Chart 2.3). The gas supply pipe must be of sufficient size to
provide the required capacity and inlet pressure to the heater (if necessary, consult the local
gas company).
Chart 2.3
• Manifold Pressure
Pressure Equivalents: 1 inch W.C. equals .058 oz/sq. in. equals 2.49 Mbar.
Note: Check manifold pressure at the tap located either at the outlet of the gas valve or on the gas
manifold pipe. Readings will be above atmospheric pressure during operation.
The gas supply to the infrared heater must be connected and tested in accordance with national, state,
provincial, and local codes along with the guidelines in the Modine Manufacturing Company IHR Series
manual. In the United States refer to the latest edition of the ANSI Z223.1 (NFPA 54) Standard and in
Canada refer to the latest edition of the CAN/CGA B149.2 Standard.
Type of Gas
Required Manifold
Pressure
Minimum
Inlet Pressure
Maximum
Inlet Pressure
Natural 6.0 Inches W.C. 7.0 Inches W.C. 14.0 Inches W.C.
Propane 10.0 Inches W.C. 11.0 Inches W.C. 14.0 Inches W.C.
WARNING
!
Improperly connected gas lines may result in fire, explosion,
poisonous fumes, toxic gases, asphyxiation, or death. Connect
gas lines in accordance to national, state, provincial, and local
codes.